M-mode apical systolic excursion: A new and simple method to evaluate global left ventricular longitudinal strain

Area of Science:

• Cardiology
• Echocardiography
• Cardiac Mechanics

Background:

• M-mode echocardiography offers regional left ventricular deformation assessment.
• Hypothesized correlation between M-mode parameters (MMASE, MAPSE) and LVLS.

Purpose of the Study:

• To investigate the correlation between MMASE, MAPSE, and LVLS.
• To evaluate simpler echocardiographic methods for predicting subclinical left ventricular systolic dysfunction.

Main Methods:

• Echocardiographic evaluation including MMASE and MAPSE measurements.
• Three-dimensional wall motion tracking (3D-WMT) for LVLS assessment.

Main Results:

• Significant correlations found between MAPSE and LVLS (r=-0.372, p=0.04).
• Significant correlations found between MMASE and LVLS (r=-0.398, p=0.027).
• Linear relationships established: ST = -10.6 - 0.4*MAPSE (r²=0.14) and ST = -13.1 - 0.5*MMASE (r²=0.16).

Conclusions:

• Simpler M-mode measurements (MAPSE, MMASE) correlate with LVLS.
• These methods may predict subclinical left ventricular systolic dysfunction.
• Potential alternative to complex strain analysis for early detection of cardiac dysfunction.